Space

Science Affairs UPSC Civil Services Examination (General Studies)

Title

45:30

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Indian Economy - Understanding the basics of Indian economic system

Consider the following statements:

1. Satellites in geostationary orbit must all occupy a single ring above the equator.

2. Geostationary orbits are mainly used for placing communication satellites

Which of the above statements are correct?

1 only

2 only

Both 1 and 2

Neither 1 or 2

Satellites :

A geostationary orbit, also referred to as a geosynchronous equatorial orbit[a] (GEO), is a circular geosynchronous orbit 35,786 kilometres (22,236 miles) in altitude above Earth’s equator (42,164 kilometres in radius from Earth’s centre) and following the direction of Earth’s rotation.
Satellites in geostationary orbit must all occupy a single ring above the equator.
An object in such an orbit has an orbital period equal to the Earth’s rotational period, one sidereal day, and so to ground observers it appears motionless, in a fixed position in the sky.
Communications satellites are often placed in a geostationary orbit so that Earthbased satellite antennas (located on Earth) do not have to rotate to track them but can be pointed permanently at the position in the sky where the satellites are located.